3rd generation, medium resolution photo surveillance; film capsule; also performed earth resources tasks. Investigation of the natural resources of the earth in the interests of various branches of the national economy of the USSR and international cooperation.
References: 1 , 2 , 6 .

Uncertain if Molniya-1T model was Molniya-1 or Molniya-1T. Operation of the long-range telephone and telegraph radio communications system in the USSR; transmission of USSR Central Television programmes to stations in the Orbita network.
References: 1 , 2 , 5 , 6 .

3rd generation, high resolution photo surveillance; film capsule; maneuverable; also performed earth resources tasks. Investigation of the natural resources of the earth in the interests of various branches of the national economy of the USSR and international cooperation.
References: 1 , 2 , 6 .

Replaced Molniya 3-13. Operation of the long-range telephone and telegraph radio communications system in the USSR; transmission of USSR Central Television programmes to stations in the Orbita network and within the framework of international cooperation.
References: 1 , 2 , 5 , 6 .